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Welcome to AX84® the base camp for tube (valve) electronics hobbyists.

AX84 exists to provide:

1) A great environment to learn about music-related electronics in general. AX84 is a place where those with experience are interested in helping diligent beginners who are willing to do their homework.

2) A place where those with more experience can field their ideas to peers and get useful feedback.

3) An environment that respects the past, but is not enslaved by it. INNOVATION IS GOOD (and it didn't die in the 1950s.) There are new things under the sun every day. Move the ball forward!

Our HUGE discussion area is under 'Discussion Forum' to your left.

We are hard at work improving the site- check back often!

Recent Forum Threads
Posted By Thin Freddy on 12/20/2014
Does most of the overall overdrive sound come from the 1st or 2nd valve? ...

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"Valve brands"
Posted By Thin Freddy on 12/20/2014
Is there a voted preferred order of current EL84 valve manufacturers? What sounds best etc.
Ie 1st, 2nd , 3rd, 4th etc
I am using a Ruby EL84, how does it stack up?...

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"pots in ltspice"
Posted By Dan Moos on 12/20/2014
What's the best way to do pots in ltspice? I know there is a thing somewhere on the Yahoo site, but I can't seem to find it. My dream would be a sub circuit that is just two resistors as a voltage div...

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"help me plan new project"
Posted By Dan Moos on 12/20/2014
I am about to start a new design, and though I'd see if you guys had some input. Here is what I am after.

I am very intrigued by Trainwreck style amps that are really sensitive to volume control on...

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"pt idle voltage"
Posted By Nortube on 12/20/2014
I am a new member to this forum. First of all, I want to say thank you for all the effort the AX84 guys have put into this site and thank you for sharing your knowledge with the world.

I'm gon...

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Updates: Sat, Dec 20th, 2014 @ 07:40:14
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Site News

2014-10-21: Be sure to check out our discussion forum using the link on the left..

2014-10-20: The Treasure Fleet is on the way to Rio De La Hacha with a fortune in gold!

We're looking for media clips of recent builds... please stop by the forum and respond to the thread.

2008-10-4: Archived Projects section is functional again.

2008-9-18: RSS Feeds for the forum have been up for a while, but not advertised...
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2008-6-26: Want to participate in our discussion forums? You are welcome to read and lurk as you like. If you think you'd like to post with regularity, please sign up for an account.

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